Hi David, my point is indeed that you should be able to put anything in them, so have a standards document which says that you can't put references to external variables in them would be a mistake .....
cheers, Martin ________________________________ From: David Hassell [[email protected]] Sent: 05 April 2017 11:35 To: Juckes, Martin (STFC,RAL,RALSP) Cc: CF Metadata Subject: Re: [CF-metadata] Overstated restriction on references to external variables in version 1.7 Hello Martin, I don't quite see what you mean - such attributes are non-standardised, so you can already put anything you like in them, but software won't be able to do anything about it. Could you perhaps give a CDL example? Many thanks, David On 5 April 2017 at 09:36, <[email protected]<mailto:[email protected]>> wrote: Hello All, Section 2.6.3, External Variables, of version 1.7 of the standard contains the statement that:"The only CF standard attribute which is allowed to refer to external variables is cell_measures." I believe this is stronger than intended: it should be possible, for instance, to refer to external variables in the comment and history attributes, and any other free text attribute, or the comment part of the cell_methods string. Should it say something along the lines of: "The only attribute which is allowed to make a CF standard reference to external variables is cell_measures"? regards, Martin _______________________________________________ CF-metadata mailing list [email protected]<mailto:[email protected]> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata -- David Hassell National Centre for Atmospheric Science Department of Meteorology, University of Reading, Earley Gate, PO Box 243, Reading RG6 6BB Tel: +44 118 378 5613 http://www.met.reading.ac.uk/ _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
